Electrotherapeutic battery.



No. 707,562. Patented Aug. 26, I902.

. T. J. DUNN.

ELECTROTHERAPE UTIC BATTERY.

(Application filed Jan. 8, 1902.) (N o M o d e I ATTORNEY UNiTnD STATES PATENT OFFICE.

THOMAS J. DUNN, OF JERSEY CITY, NE\V JERSEY.

ELECTROTHERAPEUTIC BATTERY.

SPECIFICATION forming part of Letters Patent No. 707,562, dated August 26, 1902.

Applioation'filed January 3, 1902. $erial No. 88,306. (No model.) d

To all whom it may concern.-

Be it known that I, THOMAS J. DUNN, a citizen of the United States, residing in Jersey City, in the county of Hudson, in the State of New J ersey, have invented a certain new and pliances except the handles mounted over it.

In what I esteem the most complete form of the invention I provide cylindrical caps adapted to serve the double function of closing the ends of the case when out of use and as handles to be grasped bythe patient when in use. I have discovered that it is practicable with this form of the parts to have an efficient battery of so small diameter that it may be carried in an overcoat-pocket.

The following is a description of what I consider the best means of carrying out the invention.

The accompanying drawings form a part of this specification.

Figure l is a general perspective-view of the apparatus in condition for use- Fig. 2, on a larger scale,-is a central longitudinal section showing the principal parts when compactedv B is a tubular knob mounted on the head D and electrically connected by its base with the wire or metal strip 13, and O is a corresponding knob connected to the wire or strip 0. When the apparatus is to be put in use,

the ordinary insulated flexible conductors I and J are attached each by one of its tips to one of said knobs, and the tip on the other end of each is connected to a center of the end of one of the caps by the aid of a hollow or tubular boss provided in each, the wire I connecting by its tips I and 1 with the positive knob B and with the cap N N and the Wire J similarly connecting by its tips J and J with the knob O and the cap 0 O. The proper connection being. made by the switch E and the vibrator F beingset inoperation, the patient takes the two caps N N O O.thus connected one in each hand, and so long as he holds them the device will serve in'the ordinary manner,

sending the Faradicor secondary current in the rapidly-succeeding periods through the cap N N, and thus through his person, and thence through the cap 00 back to the nega tive pole A The battery may during this period of active use stand or lie in any position required; but it has sufficient diameter to stand erect, and it will be conveniently used in such position. If, however, it shall be required to give treatment through the feet instead of the hands, the device may be simply laid on its side and a damp towel being laid over it the feet may be applied thereon and the current enjoyed in the same manner, but without the additional-metal plate which is required for this use by the'ordinary 5 forms of battery. When the instrument is to be put out of service, the regulatorG is forced down, the wire tips I J are set free from the caps, which latter is effected by simply drawing the tips out of their close-fit- 10o ting holes N O, and the wires I and J are wound or otherwise conveniently stowed. The caps thus set free are next applied by sliding them on the ends M M" of the case.

Twothin metallic caps N N and 55 Modifications may be made Without departing from the principle or sacrificing the advantages of the invention. The beads M M serve to stilfen and strengthen the case and also serve as stops against Which the caps strike to limit how far they may go in applying them. The internal bead M besides stiffening that portion of the casing, receives the head D and supports the battery and its attachments in the casing. These functions may be performed by soldering or otherwise attaching strips of metal; but the heading is lighter and is neater in appearance..

I have in my experiments used a thin tube of aluminium of proper diameter to make the casing and have produced the caps by drawing. Other metal may be used, if preferred, for economy or for any other reason; but in order to serve for the feet the casing should be a good conductor.

I claim as my invention 1. The pocket form of battery described, having the cylindrical battery A, with the vibrator and regulator and connections at one end thereof, and having a head D of beads M M and internal bead M and with v the caps N N, O 0, adapted to perform the double function of coverings to inclose the other parts and of handles to be grasped by the patient, all substantially as herein specified.

In testimony that I claim the invention above set forth I affix my signature in presence of two Witnesses.

THOS. J. DUNN.

WVitnesses:

J. B. CLAUTIoE, M. F. BOYLE. 

